MESON Chess Problem Database

Problem Display
PID: 15183 (3K2n1/2R5/1n1Q1p2/4N1pb/1N1Bk1r1/2p5/5R2/3r4 w - - 0 1)

Sushkov, Yuri Akimovich

2nd Prize, Urania, 1980

3K2n1/2R5/1n1Q1p2/4N1pb/1N1Bk1r1/2p5/5R2/3r4

#2

7 + 9

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qd5#
    • 1...Sc4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sd7
      • 2.Qd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...Sc8
      • 2.Qd5#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Sec6?
      • threat
        • 2.Qe6#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sd7
        • 2.Qd5#
      • 1...Bf7!
    • 1.Sd7?
      • threat
        • 2.Sc5#
      • 1...Rxd4
        • 2.Qe6#
      • 1...Sxd7
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa4
        • 2.Qd5#
      • 1...Rf4!
    • 1.Qc6+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kxd4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sec6#
      • 1...Rxd4+
        • 2.Sd7#
      • 1...Kxd4
        • 2.Sf3#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Bf7
        • 2.Qxg4#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(g);N_GUARD::QAB1(E)
    • S(g);N_GUARD::QAB1(E),XS(g)
    • P(h);OGATE,XS(D)::QAR1(E),XP(h)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR2(E)
      • Vars
        • R(a);OGATE,P_PINQ(E),XB(C)::QAR1(E),XR(a)
        • S(g);N_GUARD::QAB1(E)
      • Refutation
        • B(f);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • R(a);SBLOCK,XB(C)::QAR2(E)
        • S(g);N_GUARD,XS(D)::QAB1(E)
        • S(g);N_GUARD::QAB1(E),XS(g)
        • S(g);N_GUARD::QAB1(E)
      • Refutation
        • R(d);
    • Try
      • Q(E);CHECK,P_SPINB(C)
      • Vars
        • S(g);N_GUARD,N_PINB(C),P_SPINS(g)::QAB1(E),XS(g)
      • Refutation
        • K(c);P-FLIGHT,XB(C)
  • Actual
    • Q(E);P_SPINB(C)
    • Threat
      • QAR(E)+S(D)
    • Vars
      • R(a);CHECK,SBLOCK,XB(C)::QAR(E)+S(D)
      • K(c);P-FLIGHT,XB(C)::S(D)
      • P(h);OGATE,P_SPINP(h),XS(D)::QAR1(E),XP(h)
      • B(f);N_GUARD::QAR2(E),XR(d)
      • S(g);N_GUARD::QAB1(E)
      • S(g);N_GUARD,N_PINB(C)::QAB1(E)
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